Yiwei Han
University of Mississippi, MS·Engineering·Early-career
Four-dimensional (4D) printing makes 3D-printed objects that change shape in planned ways when triggered, for example by heat. Current methods for printing such objects are often complex or costly, work with few materials, or have low resolution.
- Fields
Engineering
Materials Science
- Topics
4D printing
3D printing
additive manufacturing
- Grants
- 1 known grant, through Jul 2029
What they work on
- Determine how extrusion-printed shape-changing structures affect electrohydrodynamic (EHD) printing, a high-resolution method that jets fine droplets with an electric field, and how EHD deposition speed affects resolution and impact damage.
- Test how EHD printing voltage and print bed temperature affect the deformation capability, flexibility and mechanical strength of structures made from shape-changing materials.
- Uncover how multi-material printed structures change shape, and develop and evaluate designs for flexible shape-changeable structures such as wearable heaters.
More about the research
That makes precise multi-material shape-changing parts hard to build. This project develops a hybrid printing approach to overcome these limits, with flexible wearable heaters as the target application.
Why it matters
A simpler, high-resolution way to print precise multi-material shape-changing structures could speed the development of 4D printing. This could benefit products such as flexible wearable heaters. The grant names potential uses in aerospace, healthcare, biology and the automotive industry, all of which need parts that change shape predictably.
Known grants
From NIH and NSF research grants. Labs often have other funding we can't see.
Closest labs
Yang Cao
Montana State University, MT·Engineering
Use machine learning to map how the composition of metallic nanoparticle inks controls their rheological (flow) properties, speeding up ink development for electrohydrodynamic (EHD) 3D printing.
Arunkumar Subramanian
University of Illinois Chicago, IL·Engineering
Test whether nanoscale nozzles with on-chip electrodes enable sub-continuum nano-dripping, ejecting droplets smaller than 20 nanometers under very low electric stress, using the silicon-based SNAP-Chip printer.
Roozbeh Salary
Marshall University, WV·Engineering
Identify the airflow effects that set feature size and resolution in aerosol jet printing, using computational fluid dynamics (CFD) simulations of how gas and ink droplets move.
The school
University of Mississippi: 2 labs on PI Pages, $190M a year on research, 242 research doctorates a year.
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